Old private moving around Europe working (9)
I believe the answer is:
operative
'working' is the definition.
(I know that working can be written as operative)
'old private moving around europe' is the wordplay.
'old' becomes 'o' (abbreviation).
'moving around' indicates anagramming the letters.
'europe' becomes 'e' (abbreviation eg in E number).
'o'+'private'='oprivate'
'oprivate' anagrammed gives 'operativ'.
'operativ'+'e'='OPERATIVE'
(Other definitions for operative that I've seen before include "Functioning; worker" , "desired effect" , "secret agent" , "Significant" , "Machinist - working" .)